https://bugs.llvm.org/show_bug.cgi?id=42944
Bug ID: 42944
Summary: Transform hypot(a, b) to sqrt(a*a + b*b) in fast math
mode
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: unassignedb...@nondot.org
Reporter: david.bolvan...@gmail.com
CC: llvm-bugs@lists.llvm.org
hypot(a, b) to sqrt(a*a + b*b) in -Ofast?
1, Is it ok to increase uses of a,b? Since pow(a, 2) is optimized to a*a,
probably yes..
2, Is a probability of overflow for 'a*a + b*b' high or not ? (whether this
transformation is fine for -Ofast)
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